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The impact of using...
The impact of using different wood qualities and wood species on chips produced using a novel type of pilot drum chipper
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- Gard Timmerfors, Jessica, 1989- (författare)
- Umeå universitet,Kemiska institutionen
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- Salehi, Hamid (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Skogens biomaterial och teknologi,Department of Forest Biomaterials and Technology
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- Larsson, Sylvia (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Skogens biomaterial och teknologi,Department of Forest Biomaterials and Technology
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- Sjölund, Torbjörn (författare)
- MoRe Research i Örnsköldsvik AB, Box 70, Örnsköldsvik, SE-891 22, Sweden
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- Jönsson, Leif J. (författare)
- Umeå universitet,Kemiska institutionen
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(creator_code:org_t)
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- 2021-03-03
- 2021
- Engelska.
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Ingår i: Nordic Pulp & Paper Research Journal. - : De Gruyter Open. - 0283-2631 .- 2000-0669. ; 36:2, s. 214-226
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Resource-efficient wood chipping for forest-industrial processes demands large fractions of accept chips and small fractions of small-sized material, such as pin chips and fines. In Kraft pulping, a narrow distribution of wood chip thickness is important for even impregnation and for making high-quality pulp. Using newly developed forest-industrial drum-chipping technology, the investigation covered wood of varying moisture content, frozen versus unfrozen wood, and the use of different wood species. Using conventional techniques for analyzing wood chip dimensions, fast-grown spruce wood with high moisture content gave 4.2 % pin chips and fines, which was less than half of the fractions obtained with spruce wood with lower moisture content. A comparison between frozen and unfrozen pine resulted in slightly thinner and shorter chips for the frozen wood, but in both cases accept yields of up to ∼85 % were achieved. A comparison of different tree species (aspen, birch, pine, and spruce) resulted in larger accept fractions (∼90 %) for the hardwood species, even though the average length of these wood chips was as low as 17 mm. The results provide a first indication of how basic wood log properties affect the yields of accept chips and small-sized material when using modern industrial drum-chipping technology.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Trävetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Wood Science (hsv//eng)
Nyckelord
- drum chipper
- frozen wood
- moisture content
- tree species
- wood chips
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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